
package zxing;

import java.util.Collection;
import java.util.HashSet;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.drawable.GradientDrawable;
import android.util.AttributeSet;
import android.view.View;
import com.google.zxing.ResultPoint;
import com.hichip.campro.R;
import utils.HiTools;
public final class ViewfinderView extends View {

	private static final int[] SCANNER_ALPHA = { 0, 64, 128, 192, 255, 192,
			128, 64 };
	private static final long ANIMATION_DELAY = 100L;
	private static final int OPAQUE = 0xFF;

	private final Paint paint;
	private Bitmap resultBitmap;
	private final int maskColor;
	private final int resultColor;
	private final int frameColor;
	private final int laserColor;
	private final int resultPointColor;
	private int scannerAlpha;
	private Collection<ResultPoint> possibleResultPoints;
	private Collection<ResultPoint> lastPossibleResultPoints;

	// 二维码 美化功能 添加处
	private boolean laserLinePortrait = true;
	Rect mRect;
	int i = 0;
	GradientDrawable mDrawable;
	Paint textPaint;
	private int textColor;
	private int rectCorner_color;
	private int laserColor_left;
	private int laserColor_center;
	private int laserColor_right;
	private Context context;
	private Paint mMyPaint;


	public ViewfinderView(Context context, AttributeSet attrs) {
		super(context, attrs);

		this.context=context;
		paint = new Paint();
        mMyPaint=new Paint();

		// 二维码 美化功能 添加处
		textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
		mRect = new Rect();
		Resources resources = getResources();
		laserColor_left = resources.getColor(R.color.viewfinder_laser_left);// 设置 扫描线的  左边 的颜色
		laserColor_center = resources.getColor(R.color.viewfinder_laser_center);// 设置 扫描线的  中间 的颜色
		laserColor_right = resources.getColor(R.color.viewfinder_laser_right);// 设置 扫描线的 右边  的颜色


		maskColor = resources.getColor(R.color.viewfinder_mask);
		resultColor = resources.getColor(R.color.result_view);
		frameColor = resources.getColor(R.color.viewfinder_frame);
		laserColor = resources.getColor(R.color.viewfinder_laser);// 设置 扫描线的 的颜色
		textColor = resources.getColor(R.color.viewfinder_text);// 设置 扫描 框下面的的 的颜色
		resultPointColor = resources.getColor(R.color.possible_result_points);//  设置闪点的 颜色
		rectCorner_color= resources.getColor(R.color.viewfinder_4_corner);//设置 扫描框的 四个角的颜色
		mDrawable = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, new int[] {Color.parseColor("#00FFFFFF"), laserColor, Color.parseColor("#00FFFFFF") });
		scannerAlpha = 0;
		possibleResultPoints = new HashSet<ResultPoint>(5);
	}

	@Override
	public void onDraw(Canvas canvas) {
		// 中间的扫描框，你要修改扫描框的大小，去CameraManager里面修改
		Rect frame = CameraManager.get().getFramingRect();
		if (frame == null) {
			return;
		}
		// 获取屏幕的宽和高
		int width = canvas.getWidth();
		int height = canvas.getHeight();

		// Draw the exterior (i.e. outside the framing rect) darkened
		//画出扫描框外面的阴影部分，共四个部分，扫描框的上面到屏幕上面，扫描框的下面到屏幕下面
		//										扫描框的左边面到屏幕左边，扫描框的右边到屏幕右边
		paint.setColor(resultBitmap != null ? resultColor : maskColor);
		canvas.drawRect(0, 0, width, frame.top, paint);
		canvas.drawRect(0, frame.top, frame.left, frame.bottom + 1, paint);
		canvas.drawRect(frame.right + 1, frame.top, width, frame.bottom + 1,paint);
		canvas.drawRect(0, frame.bottom + 1, width, height, paint);

		if (resultBitmap != null) {
			// Draw the opaque result bitmap over the scanning rectangle
			paint.setAlpha(OPAQUE);
			canvas.drawBitmap(resultBitmap, frame.left, frame.top, paint);
		} else {
			paint.setColor(rectCorner_color);
			//画出四个角：以屏幕左上角 为原点进行画边-画矩形：遵守  左-上-右-下原则
			canvas.drawRect(frame.left - 10, frame.top - 10, frame.left + 120, frame.top+10, paint);
			canvas.drawRect(frame.left - 10, frame.top - 10, frame.left+10, frame.top + 120, paint);
			canvas.drawRect(frame.right - 120, frame.top - 10, frame.right + 10, frame.top+10, paint);
			canvas.drawRect(frame.right-10, frame.top - 10, frame.right + 10, frame.top + 120, paint);


			canvas.drawRect(frame.left - 10,frame.bottom-10, frame.left + 120,frame.bottom + 10, paint);
			canvas.drawRect(frame.left - 10, frame.bottom - 120, frame.left+10,frame.bottom + 10 , paint);
			canvas.drawRect(frame.right - 120,  frame.bottom-10, frame.right + 10, frame.bottom + 10, paint);
			canvas.drawRect(frame.right-10,  frame.bottom - 120, frame.right + 10,frame.bottom + 10, paint);

			mMyPaint.setColor(rectCorner_color);
            mMyPaint.setStrokeWidth(8);
            mMyPaint.setStyle(Paint.Style.STROKE);
			canvas.drawRect(frame.left,frame.top,frame.right,frame.bottom,mMyPaint);

			int middle = frame.width() / 2;
//			int pxValue=Utils.sp2px(context, getResources().getDimension(R.dimen.laser_bottom_text_sp));//设置字体的大小； 将sp 转换成px\

			int pxValue=(int) getResources().getDimension(R.dimen.laser_bottom_text_sp);//这个 返回来的 就是px 值
			textPaint.setTextSize(pxValue);
			textPaint.setColor(textColor);//字体颜色
			String text = getResources().getString(R.string.dimension_content);

			int textLen=(int) textPaint.measureText(text);//获得文本的长度
			int offset= HiTools.dip2px(context,30);
			canvas.drawText(text, frame.width() / 2 + frame.left-textLen/2, frame.bottom + offset, textPaint);

//			画一个红色的线
			paint.setColor(laserColor);// 这句话 似乎没有用
			paint.setStrokeWidth(2);//
			//上下走的线   ：实现线 上下走
			if (laserLinePortrait) {
				if ((i += 5) < frame.bottom - frame.top) {
					int r = 8;
					mDrawable.setShape(GradientDrawable.RECTANGLE);//设置 矩形线
					mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);//LINEAR_GRADIENT  设置线的颜色渐变
					setCornerRadii(mDrawable, r, r, r, r);
					mRect.set(frame.left + 2, frame.top - 5 + i, frame.right - 1, frame.top + 5 + i);
					mDrawable.setBounds(mRect);
					mDrawable.draw(canvas);
					invalidate();
				} else {
					i = 0;
				}

			} else {
				float left = frame.left + (frame.right - frame.left) / 2 - 2;
				canvas.drawRect(left, frame.top, left + 2, frame.bottom - 2, paint);
			}
			Collection<ResultPoint> currentPossible = possibleResultPoints;
			Collection<ResultPoint> currentLast = lastPossibleResultPoints;
			if (currentPossible.isEmpty()) {
				lastPossibleResultPoints = null;
			} else {
				possibleResultPoints = new HashSet<ResultPoint>(5);
				lastPossibleResultPoints = currentPossible;
				paint.setAlpha(OPAQUE);
				paint.setColor(resultPointColor);//  设置扫描  亮点的颜色
				for (ResultPoint point : currentPossible) {
					canvas.drawCircle(frame.left + point.getX(), frame.top
							+ point.getY(), 6.0f, paint);
				}
			}
			if (currentLast != null) {
				paint.setAlpha(OPAQUE / 2);
				paint.setColor(resultPointColor);
				for (ResultPoint point : currentLast) {
					canvas.drawCircle(frame.left + point.getX(), frame.top
							+ point.getY(), 3.0f, paint);
				}
			}

			// Request another update at the animation interval, but only
			// repaint the laser line,
			// not the entire viewfinder mask.
			//只刷新扫描框的内容，其他地方不刷新
			postInvalidateDelayed(ANIMATION_DELAY, frame.left, frame.top,
					frame.right, frame.bottom);
		}
	}
	public void setCornerRadii(GradientDrawable drawable, float r0, float r1, float r2, float r3) {
		drawable.setCornerRadii(new float[] { r0, r0, r1, r1, r2, r2, r3, r3 });
	}
	public void drawViewfinder() {
		resultBitmap = null;
		invalidate();
	}

	/**
	 * Draw a bitmap with the result points highlighted instead of the live
	 * scanning display.
	 *
	 * @param barcode
	 *            An image of the decoded barcode.
	 */
	public void drawResultBitmap(Bitmap barcode) {
		resultBitmap = barcode;
		invalidate();
	}

	public void addPossibleResultPoint(ResultPoint point) {
		possibleResultPoints.add(point);
	}



}
